74 lines
2.5 KiB
Org Mode
74 lines
2.5 KiB
Org Mode
#+title: lesson 02 | course overview + the shell
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#+HTML_HEAD: <link rel="stylesheet" type="text/css" href="../_share/media/css/missing-semester.css" />
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#+HTML_HEAD: <link rel="stylesheet" type="text/css" href="../_share/media/css/org-media-sass/collapsible.css" />
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#+HTML_HEAD: <script src="../_share/media/js/collapsible.js"></script>
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* Links
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#+attr_html: :class links
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- [[../toc.org][TOC | Missing Semester]]
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- [[https://www.youtube.com/playlist?list=PLyzOVJj3bHQuloKGG59rS43e29ro7I57J][Playlist: Missing Semester]]
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* Notes
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** bash
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*** spaces are critical with bash
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- this works:
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#+begin_src bash
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foo=bar
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echo $foo
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#+end_src
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- this doesn't:
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#+begin_src bash
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foo = bar
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echo $foo
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#+end_src
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the output of that will be
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=zsh: command not found: foo=
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- what happens in the above example is that we are effectively calling the "foo" program with the arguments: "=" and "bar"
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*** quotes
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- you can use double or single quotes to print a value
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#+begin_src bash
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echo "Hello"
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#+end_src
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#+begin_src bash
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echo 'Hello'
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#+end_src
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- double quotes can interpolate variables
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#+begin_src bash
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echo "Value is $foo"
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#+end_src
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will return: =Value is bar=
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- single quotes can NOT interpoloate variables
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#+begin_src bash
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echo 'Value is $foo'
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#+end_src
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will return: =Value is $foo=
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*** Playlist
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#+attr_html: :class playlist
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1. [[https://www.youtube.com/watch?v=kgII-YWo3Zw&t=54s][control flow functions]]
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2. [[https://www.youtube.com/watch?v=kgII-YWo3Zw&t=227s][sequential execution]]
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3. [[https://www.youtube.com/watch?v=kgII-YWo3Zw&t=425s][standard input]]
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4. [[https://www.youtube.com/watch?v=kgII-YWo3Zw&t=444s][error code]]
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5. [[https://www.youtube.com/watch?v=kgII-YWo3Zw&t=517s][logical operators]]
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6. [[https://www.youtube.com/watch?v=kgII-YWo3Zw&t=603s][concatenate commands]]
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7. [[https://www.youtube.com/watch?v=kgII-YWo3Zw&t=645s][common substitution]]
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8. [[https://www.youtube.com/watch?v=kgII-YWo3Zw&t=675s][process substitution]]
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9. [[https://www.youtube.com/watch?v=kgII-YWo3Zw&t=935s][comparison operator]]
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10. [[https://www.youtube.com/watch?v=kgII-YWo3Zw&t=1173s][curly braces]]
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11. [[https://www.youtube.com/watch?v=kgII-YWo3Zw&t=1359s][python script]]
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12. [[https://www.youtube.com/watch?v=kgII-YWo3Zw&t=1707s][man command]]
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13. [[https://www.youtube.com/watch?v=kgII-YWo3Zw&t=2175s][finding files]]
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14. [[https://www.youtube.com/watch?v=kgII-YWo3Zw&t=2190s][grep]]
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15. [[https://www.youtube.com/watch?v=kgII-YWo3Zw&t=2573s][fuzzy finder]]
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16. [[https://www.youtube.com/watch?v=kgII-YWo3Zw&t=2649s][history substring search]]
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